Probably a separate application extendable with plugins to search different media would be a better solution than a browser based one. Say an user wants to find a song suitable for a certain mood while reading a book on a certain subject, then one day someone could add a plugin that connects to the house IoT network to choose the best lighting and aromas based on the same information used by the above plugins, etc.
The point is that the user input might not be a text line but a combination of it plus other data obtained by sensors like weather, temperature, .. pretty much everything, heart rate, etc.
I noticed it doesn't remember tweets directly, just twitter.com as url if you check the feed. It's hard to find again a tweet at that location.